Construction Drawings Abbreviation. A construction drawing or an engineering print is full of icons, lines and abbreviations. There are so many that you must know or have an idea to what they are referring to in order to fully understand what's been designed in the construction drawing. These are typical abbreviation that you might find on a typical engineering drawing or in almost any design print. A/C - Air Conditioner.
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Each skateboard wheel is mounted on its axle via two bearings. With few exceptions, the bearings are the industrial standard 608 size, with a bore of 8 mm, an outer diameter of 22 mm, and a width of 7 mm. These are usually made of steel, though silicon nitride, a high-tech ceramic, is sometimes used.